Device using a camera and light polarization for the remote displacement of a cursor on a display
First Claim
Patent Images
1. A system for imaging a screen of a display device comprising:
- a photo sensor array sensing incident light emitted or reflected from the screen and a background region near the screen and generating at least one image set corresponding to the sensing; and
at least one polarizing filter including at least first and second polarizing regions for filtering light incident on the photo sensor array, wherein the first and second polarizing regions have first and second polarizing angles, respectively;
wherein each image set of the at least one image set includes at least one image having a first plurality of pixels corresponding to the sensing of incident light filtered by the first polarizing region and a second plurality of pixels corresponding to the sensing of incident light filtered by the second polarizing region.
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Abstract
A system and method is provided for imaging a screen of a display device, including filtering light emitted or reflected from the screen and a background region in proximity to the screen using first and second polarizing angles; sensing the filtered light; and generating at least one image set corresponding to the sensed filtered light. Each image set includes at least one image having a first plurality of pixels corresponding to the sensed filtered light using the first polarizing angle and a second plurality of pixels corresponding to the sensed filtered light using the second polarizing angle.
37 Citations
31 Claims
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1. A system for imaging a screen of a display device comprising:
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a photo sensor array sensing incident light emitted or reflected from the screen and a background region near the screen and generating at least one image set corresponding to the sensing; and
at least one polarizing filter including at least first and second polarizing regions for filtering light incident on the photo sensor array, wherein the first and second polarizing regions have first and second polarizing angles, respectively;
wherein each image set of the at least one image set includes at least one image having a first plurality of pixels corresponding to the sensing of incident light filtered by the first polarizing region and a second plurality of pixels corresponding to the sensing of incident light filtered by the second polarizing region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for imaging a screen of a display device comprising the steps of:
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filtering light emitted or reflected from the screen and a background region in proximity to the screen using first and second polarizing angles;
sensing the filtered light; and
generating at least one image set corresponding to the sensed filtered light;
wherein each image set includes at least one image having a first plurality of pixels corresponding to the sensed filtered light using the first polarizing angle and a second plurality of pixels corresponding to the sensed filtered light using the second polarizing angle. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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26. A system for remotely controlling a cursor displayed on a graphical user interface (GUI) displayed on a screen of a display device, said system comprising:
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a polarizing filter including at least first and second polarizing regions arranged in an arrangement for filtering light, wherein the first and second polarizing regions have first and second polarizing angles, respectively;
a photo sensor array sensing incident light emitted or reflected from the screen and a background region in proximity to the screen, said incident light being filtered by the first and second polarizing regions, said photo sensor array generating at least one image corresponding to the sensed incident light;
at least one processor;
at least one storage device accessible by the at least one processor and storing a series of programmable instructions executable by the at least one processor for;
comparing intensities between first and second pixels of respective pixel pairs of an image of the at least one image, wherein the first pixel corresponds to incident light filtered by the first polarizing region and the second pixel corresponds to incident light filtered by the second polarizing region;
determining a location of at least one feature of the screen in the image based on the intensity comparisons of the respective pixel pairs; and
tracking movement of the location of the at least one feature in at least two images of the at least one image; and
a communication device for transmitting tracking information indicative of the tracked movement to a processing device associated with the display device for controlling the position of a position indicator provided on a GUI displayed on the screen of the display device in accordance with the tracked movement of the location of the at least one feature. - View Dependent Claims (27, 28, 29, 30, 31)
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Specification